2015 MERCEDES-BENZ CLA250 Complaints

UNKNOWN- The check engine light came on and was taken for a diagnostic test and it returned a P052E code. This indicates a fault in the Positive Crankcase Ventilation Regulator Valve performance. This is a known issue with Mercedes Benz as there has been a recall for all the models except the CLA.

I was driving to work on Thursday, September 11th. Suddenly, I heard a loud noise like an explosion. Upon checking, I saw that my sunroof had exploded, shattering glass everywhere. The loud noise startled me, causing me to almost have an accident. I managed to pull over, check my vehicle, and drive it back home. I've contacted my insurance company and documented the damage with photos.

The contact owns a 2015 Mercedes-Benz CLA250. The contact stated that the air bag warning light was illuminated. The contact stated that the vehicle was previously involved in a collision, in which another vehicle crashed into the passenger's side of the vehicle, causing damage to the frame and headlights; however, the air bags failed to deploy. The contact sustained soreness in the neck and back and received medical assistance. A police report was filed, but the contact did not have the police report information available. Additionally, the contact stated that while driving at 65 MPH, the vehicle stalled. The contact pulled to the shoulder of the road. The vehicle was able to restart; however, the failure recurred several times while driving. The contact related the failure to NHTSA Campaign Number: 15V662000(Engine and Engine Cooling). The contact stated that the vehicle had leaked excessive oil onto the ground. The contact stated that the vehicle had failed to start while pressing the Push to Start button. The vehicle was taken to the dealer, where the contact was informed that she would need to pay a fee for diagnostic testing. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the vehicle. The failure mileage was approximately 80,000.

Check Engine Light - Code P052E71 - Positive Crankcase Ventilation Valve Performance. The component failure can lead to increased exhaust gas emission, oil leaks, and internal engine damage resulting in unsafe operation. Yes, the problem has been confirmed by an independent certified service center. This specific vehicle has not been inspected by the manufacturer, but this specific problem has been identified in other similar Mercedes-Benz years, make, and models. MBUSA LLC is only willing to apply the EMISSION EXTENDED WARRANTY to certain models within a certain model year, even though the design and engine components are nearly identical if not the same. My vehicle is the same model year and class, but a different model type and not included in the EMISSION EXTENDED WARRANTY. Repair cost can be in excess of $2,000 if not covered under the added warranty.

Mercedes subframes that prematurely rust or deteriorate. Mercedes has extended warranty for the mentioned parts on some models. But clearly it is not enough because more models have the same issues. This is a serious safety issues and Mercedes should have taken more responsibility.

In November 2024, while at a stop, the car shut off. A few weeks later, while driving the car over speed tables/humps, the car shifted from drive into neutral. No warning or error lights appeared on the dashboard. It just showed that the car was now in neutral. I was able to shift back into drive and continue. Fortunately, I was in a residential neighborhood, going about 10 miles per hour and had only one car behind me. This happened again in December, with the same scenario and on the same road, so I took the car to the dealer. They did a diagnostic and was not able to duplicate the problem, but said there were some error codes and it could possibly be the starter, auxiliary battery or transmisson service, since I had not done one. They also stated there was a Coolant Thermostat electrical fault code. They scheduled me to come back in January 2025 since I needed a loaner car. They kept my car for a couple of days to do a more detailed diagnostic. In the end they replaced the auxiliary battery and did a transmission service because they could not replicate the problem. Said that there was nothing in the transmission fluid of concern and, the starter code had not returned. Stated that it could have been an electrical fluke. No other codes were showing. They did say that some time in the future I would need a coolant thermostat. Car ran well for a few weeks and then in February 2025, going over the same road with speed humps, the car went into neutral. The car has been in the shop for the last 7 days and they are trying to figure out what is happening. I am submitting this because I found many other people posting on forums about having the same issue. My concern is what will happen if my car moves into neutral while I am going at a high speed. It puts me, my family and others lives in danger if my car stops suddenly.

The contact owns a 2015 Mercedes-Benz CLA250. The contact stated that the vehicle was taken to a local dealer and the vehicle starting very rather slowly. The vehicle was diagnosed however, no cause for the failure was found. The contact stated that the vehicle operated normally; however, the following day while driving approximately 50 MPH, the vehicle started to lose automotive power. The contact pulled over to the side of the highway until the vehicle came to a complete stop. The contact attempted to restart the vehicle; however, the vehicle failed to start. The vehicle was towed to the residence. The vehicle was inspected by two independent mechanics however, the contact was informed that the engine needed to be replaced. The vehicle was not repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 124,000.

The contact owns a 2015 Mercedes-Benz CLA250. The contact stated that after the vehicle was washed at the Car Wash, the contact opened the sunroof; however, moments later while attempting to close the sunroof, the sunroof failed to close properly. The local dealer was not contacted. The vehicle was not repaired. The manufacturer was notified of the failure. The approximate failure mileage was 69,080.

There was a recent extended warranty issued by Mercedes-Benz to repair certain vehicle models free of charge that have a check engine light code P052E. Unfortunately my vehicle (2015 CLA 250) was not included in that recall, but the CLA250 models have the same issue and run the same risk of safety being compromised. Now myself, and many others, have to pay a hefty out of pocket price for a malfunction that is strictly the fault of the manufacturer. Please look into this and strongly consider having Mercedes-Benz include the CLA 250 models in this warranty.

The component that malfunctioned is the Crankcase valve. This valve malfunction has caused issues will the car is idle. The issue has been confirmed by the dealership. The issue has been inspected by the manufacturer as the manufacturer has released extended warranties on other models. The malfunction causes the check engine light to come on, however in the past it has gone off before a diagnostic test could be run; the check engine light would come on and go off then go on and go off, the exact amount of time is unknown.